21021737

素因数分解:

${\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{557}}^1$

素因数の和:688

約数の個数: 16

約数和(自身を含む): 23784192

約数和(自身を除く): 2762455

約数列:

[1, 11, 47, 73, 517, 557, 803, 3431, 6127, 26179, 37741, 40661, 287969, 447271, 1911067, 21021737]

約数ペア:

[(1, 21021737), (11, 1911067), (47, 447271), (73, 287969), (517, 40661), (557, 37741), (803, 26179), (3431, 6127)]